A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 6685-01-391-6010
NSN 5910-01-420-4485
NSN 5920-01-122-6303
NSN 6130-00-281-5978
NSN 6110-01-042-8620
NSN 5965-01-099-2989
NSN 6620-01-562-0615
NSN 6110-00-602-1371
NSN 5935-01-133-1738
NSN 5855-01-132-5139
NSN 6105-00-833-8045
NSN 6685-00-186-9190